Hi nostr:npub1esz5s74zat6yc5qsclzy2vqjvzj7qlt2jwudcshxlhucmrka665q7wa0rq, it looks like that profile is a Mastodon profile made available through a Nostr-Mastodon bridge.

It doesn’t look like you are connected to any such bridges yet, can you try adding wss://relay.mostr.pub to your relay list? That should do the trick!